KUWAIT CITY, June 28 : Kuwait on Sunday identified the suicide bomber behind an attack on a Shiite mosque as a Saudi national, after a series of arrests in connection with the blast that left 26 dead.Friday's attack also wounded 227 worshippers in the first bombing of a mosque in the tiny Gulf state, and Kuwait's security services have vowed to catch and punish those responsible.The Islamic State group's Saudi affiliate, the so-called Najd Province, claimed the bombing and identified the assailant as Abu Suleiman al-Muwahhid.Kuwait's interior ministry gave the real name of the attacker as Fahd Suleiman Abdulmohsen al-Qaba'a, in a statement carried by the official KUNA news agency.It said that he entered the country through Kuwait Airport at dawn on Friday, the same day of the bombing.A handout photograph of Qaba'a showed a young bearded man wearing a traditional Saudi headdress. Earlier on Sunday, the ministry said that security services arrested the driver of the car that transported the bomber to the Al-Imam Al-Sadeq mosque in Kuwait City.Meanwhile, three members of the same family were among at least 15 Britons killed in the Tunisia attack, reports said on Sunday, in Britain's worst loss of life in a terror incident since the 2005 London bombings.As ministers warned the toll would likely rise, details began to emerge of those gunned down in Friday's Islamist massacre at a popular beach resort. ?AFP